262589
Fibrous thickenings of hygroscope nature are found in this part of the another wall.
1 Epidermis
2 Endothecium
3 Middle layers
4 Tapetum
Explanation:
Anther wall is consist of four layers epidermis, middle layer, endothecium and tapetun. Epidermis is outermost covering and protective in nature. Middle layer is one of three layers. Endothecium has fibrous thickening of hygroscopic nature in their cell wall and it helps in the dehiscence of the mature anther. Tapetun is innermost layer and nutritive in nature.
VMMC-2010
Sexual Reproduction in Flowering Plants
262590
The number of pollen grains produced by head inflorescence of Asteraceae (Compositae) having 10 flowers. If each anther produces 20 pollen grains are
1 300
2 500
3 800
4 1,000
Explanation:
In Asteraceae family plants are annual or perennial herbs or small shrubs or small tree or climbers having head inflorescence, each flower has 5 anther. So, total no. of anther \(=10 \times 5=50\) anthers. And each anther produces 20 pollen grains, So, total no of pollen grains \(=20 \times 50=1000\)
CMC Vellore-2007
Sexual Reproduction in Flowering Plants
262591
The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
1 Hyacinthus
2 Datura
3 Drosera
4 Glycine max
Explanation:
Production of haploid plants from anther culture came from the work of Guha and Maheshwari. In 1970, Guha and Maheshwari first recorded anther culture in Datura innoxia by in vitro methods.
CG PMT-2010 /Haryana PMT-1999
Sexual Reproduction in Flowering Plants
262592
Diadelphous condition is found in
1 Rosaceae
2 Papilionaceae
3 Leguminosae
4 Cucurbitaceae
Explanation:
Diadelphous condition is found in family papilionaceae (it is sub-family of leguminosae). In this condition filaments of the anthers in a flower are fused into two groups \((9+1)\).
CMC Ludhiana-2012
Sexual Reproduction in Flowering Plants
262593
Pollen kit material is secreted by
1 tapetum
2 endothecium
3 epidermis
4 endodermis
Explanation:
Pollen kit material is screted by tapetum. It is adhesive-like material present around pollen grains as yellow covering. It help in pollination. Tapetun is innermost layer of anther wall and important for nutrition of developing pollen grains. It is also a source of pollen coat. Epidermis is protective in nature. Endothecium is helpful in anther wall dehiscence.
262589
Fibrous thickenings of hygroscope nature are found in this part of the another wall.
1 Epidermis
2 Endothecium
3 Middle layers
4 Tapetum
Explanation:
Anther wall is consist of four layers epidermis, middle layer, endothecium and tapetun. Epidermis is outermost covering and protective in nature. Middle layer is one of three layers. Endothecium has fibrous thickening of hygroscopic nature in their cell wall and it helps in the dehiscence of the mature anther. Tapetun is innermost layer and nutritive in nature.
VMMC-2010
Sexual Reproduction in Flowering Plants
262590
The number of pollen grains produced by head inflorescence of Asteraceae (Compositae) having 10 flowers. If each anther produces 20 pollen grains are
1 300
2 500
3 800
4 1,000
Explanation:
In Asteraceae family plants are annual or perennial herbs or small shrubs or small tree or climbers having head inflorescence, each flower has 5 anther. So, total no. of anther \(=10 \times 5=50\) anthers. And each anther produces 20 pollen grains, So, total no of pollen grains \(=20 \times 50=1000\)
CMC Vellore-2007
Sexual Reproduction in Flowering Plants
262591
The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
1 Hyacinthus
2 Datura
3 Drosera
4 Glycine max
Explanation:
Production of haploid plants from anther culture came from the work of Guha and Maheshwari. In 1970, Guha and Maheshwari first recorded anther culture in Datura innoxia by in vitro methods.
CG PMT-2010 /Haryana PMT-1999
Sexual Reproduction in Flowering Plants
262592
Diadelphous condition is found in
1 Rosaceae
2 Papilionaceae
3 Leguminosae
4 Cucurbitaceae
Explanation:
Diadelphous condition is found in family papilionaceae (it is sub-family of leguminosae). In this condition filaments of the anthers in a flower are fused into two groups \((9+1)\).
CMC Ludhiana-2012
Sexual Reproduction in Flowering Plants
262593
Pollen kit material is secreted by
1 tapetum
2 endothecium
3 epidermis
4 endodermis
Explanation:
Pollen kit material is screted by tapetum. It is adhesive-like material present around pollen grains as yellow covering. It help in pollination. Tapetun is innermost layer of anther wall and important for nutrition of developing pollen grains. It is also a source of pollen coat. Epidermis is protective in nature. Endothecium is helpful in anther wall dehiscence.
262589
Fibrous thickenings of hygroscope nature are found in this part of the another wall.
1 Epidermis
2 Endothecium
3 Middle layers
4 Tapetum
Explanation:
Anther wall is consist of four layers epidermis, middle layer, endothecium and tapetun. Epidermis is outermost covering and protective in nature. Middle layer is one of three layers. Endothecium has fibrous thickening of hygroscopic nature in their cell wall and it helps in the dehiscence of the mature anther. Tapetun is innermost layer and nutritive in nature.
VMMC-2010
Sexual Reproduction in Flowering Plants
262590
The number of pollen grains produced by head inflorescence of Asteraceae (Compositae) having 10 flowers. If each anther produces 20 pollen grains are
1 300
2 500
3 800
4 1,000
Explanation:
In Asteraceae family plants are annual or perennial herbs or small shrubs or small tree or climbers having head inflorescence, each flower has 5 anther. So, total no. of anther \(=10 \times 5=50\) anthers. And each anther produces 20 pollen grains, So, total no of pollen grains \(=20 \times 50=1000\)
CMC Vellore-2007
Sexual Reproduction in Flowering Plants
262591
The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
1 Hyacinthus
2 Datura
3 Drosera
4 Glycine max
Explanation:
Production of haploid plants from anther culture came from the work of Guha and Maheshwari. In 1970, Guha and Maheshwari first recorded anther culture in Datura innoxia by in vitro methods.
CG PMT-2010 /Haryana PMT-1999
Sexual Reproduction in Flowering Plants
262592
Diadelphous condition is found in
1 Rosaceae
2 Papilionaceae
3 Leguminosae
4 Cucurbitaceae
Explanation:
Diadelphous condition is found in family papilionaceae (it is sub-family of leguminosae). In this condition filaments of the anthers in a flower are fused into two groups \((9+1)\).
CMC Ludhiana-2012
Sexual Reproduction in Flowering Plants
262593
Pollen kit material is secreted by
1 tapetum
2 endothecium
3 epidermis
4 endodermis
Explanation:
Pollen kit material is screted by tapetum. It is adhesive-like material present around pollen grains as yellow covering. It help in pollination. Tapetun is innermost layer of anther wall and important for nutrition of developing pollen grains. It is also a source of pollen coat. Epidermis is protective in nature. Endothecium is helpful in anther wall dehiscence.
262589
Fibrous thickenings of hygroscope nature are found in this part of the another wall.
1 Epidermis
2 Endothecium
3 Middle layers
4 Tapetum
Explanation:
Anther wall is consist of four layers epidermis, middle layer, endothecium and tapetun. Epidermis is outermost covering and protective in nature. Middle layer is one of three layers. Endothecium has fibrous thickening of hygroscopic nature in their cell wall and it helps in the dehiscence of the mature anther. Tapetun is innermost layer and nutritive in nature.
VMMC-2010
Sexual Reproduction in Flowering Plants
262590
The number of pollen grains produced by head inflorescence of Asteraceae (Compositae) having 10 flowers. If each anther produces 20 pollen grains are
1 300
2 500
3 800
4 1,000
Explanation:
In Asteraceae family plants are annual or perennial herbs or small shrubs or small tree or climbers having head inflorescence, each flower has 5 anther. So, total no. of anther \(=10 \times 5=50\) anthers. And each anther produces 20 pollen grains, So, total no of pollen grains \(=20 \times 50=1000\)
CMC Vellore-2007
Sexual Reproduction in Flowering Plants
262591
The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
1 Hyacinthus
2 Datura
3 Drosera
4 Glycine max
Explanation:
Production of haploid plants from anther culture came from the work of Guha and Maheshwari. In 1970, Guha and Maheshwari first recorded anther culture in Datura innoxia by in vitro methods.
CG PMT-2010 /Haryana PMT-1999
Sexual Reproduction in Flowering Plants
262592
Diadelphous condition is found in
1 Rosaceae
2 Papilionaceae
3 Leguminosae
4 Cucurbitaceae
Explanation:
Diadelphous condition is found in family papilionaceae (it is sub-family of leguminosae). In this condition filaments of the anthers in a flower are fused into two groups \((9+1)\).
CMC Ludhiana-2012
Sexual Reproduction in Flowering Plants
262593
Pollen kit material is secreted by
1 tapetum
2 endothecium
3 epidermis
4 endodermis
Explanation:
Pollen kit material is screted by tapetum. It is adhesive-like material present around pollen grains as yellow covering. It help in pollination. Tapetun is innermost layer of anther wall and important for nutrition of developing pollen grains. It is also a source of pollen coat. Epidermis is protective in nature. Endothecium is helpful in anther wall dehiscence.
262589
Fibrous thickenings of hygroscope nature are found in this part of the another wall.
1 Epidermis
2 Endothecium
3 Middle layers
4 Tapetum
Explanation:
Anther wall is consist of four layers epidermis, middle layer, endothecium and tapetun. Epidermis is outermost covering and protective in nature. Middle layer is one of three layers. Endothecium has fibrous thickening of hygroscopic nature in their cell wall and it helps in the dehiscence of the mature anther. Tapetun is innermost layer and nutritive in nature.
VMMC-2010
Sexual Reproduction in Flowering Plants
262590
The number of pollen grains produced by head inflorescence of Asteraceae (Compositae) having 10 flowers. If each anther produces 20 pollen grains are
1 300
2 500
3 800
4 1,000
Explanation:
In Asteraceae family plants are annual or perennial herbs or small shrubs or small tree or climbers having head inflorescence, each flower has 5 anther. So, total no. of anther \(=10 \times 5=50\) anthers. And each anther produces 20 pollen grains, So, total no of pollen grains \(=20 \times 50=1000\)
CMC Vellore-2007
Sexual Reproduction in Flowering Plants
262591
The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
1 Hyacinthus
2 Datura
3 Drosera
4 Glycine max
Explanation:
Production of haploid plants from anther culture came from the work of Guha and Maheshwari. In 1970, Guha and Maheshwari first recorded anther culture in Datura innoxia by in vitro methods.
CG PMT-2010 /Haryana PMT-1999
Sexual Reproduction in Flowering Plants
262592
Diadelphous condition is found in
1 Rosaceae
2 Papilionaceae
3 Leguminosae
4 Cucurbitaceae
Explanation:
Diadelphous condition is found in family papilionaceae (it is sub-family of leguminosae). In this condition filaments of the anthers in a flower are fused into two groups \((9+1)\).
CMC Ludhiana-2012
Sexual Reproduction in Flowering Plants
262593
Pollen kit material is secreted by
1 tapetum
2 endothecium
3 epidermis
4 endodermis
Explanation:
Pollen kit material is screted by tapetum. It is adhesive-like material present around pollen grains as yellow covering. It help in pollination. Tapetun is innermost layer of anther wall and important for nutrition of developing pollen grains. It is also a source of pollen coat. Epidermis is protective in nature. Endothecium is helpful in anther wall dehiscence.
